Condition‐dependent interaction between mating success and competitive fertilization success in Drosophila melanogaster*
| Autor: | Alessio N De Nardo, Sonja H. Sbilordo, Jeannine Roy, Stefan Lüpold |
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| Přispěvatelé: | University of Zurich, De Nardo, Alessio N |
| Rok vydání: | 2021 |
| Předmět: |
Male
0106 biological sciences 0301 basic medicine Evolution media_common.quotation_subject Zoology 1100 General Agricultural and Biological Sciences Biology Affect (psychology) 010603 evolutionary biology 01 natural sciences Competition (biology) Courtship 10127 Institute of Evolutionary Biology and Environmental Studies Sexual Behavior Animal 03 medical and health sciences 1311 Genetics Behavior and Systematics Genetics Animals Mating reproductive and urinary physiology Ecology Evolution Behavior and Systematics media_common Ecology Reproduction biology.organism_classification Spermatozoa Sperm 1105 Ecology Evolution Behavior and Systematics Drosophila melanogaster 030104 developmental biology Mate choice Fertilization Sexual selection behavior and behavior mechanisms 570 Life sciences biology 590 Animals (Zoology) Female General Agricultural and Biological Sciences |
| Zdroj: | Evolution. 75:2014-2026 |
| ISSN: | 1558-5646 0014-3820 |
| Popis: | Dietary restriction during development can affect adult body size and condition. In many species, larger (high-condition) males gain higher mating success through male-male competition and female choice, and female condition can affect the extent of both female mate choice and male investment in courtship or ejaculates. However, few studies have examined the joint effects and interplay of male and female condition during both the pre- and the postcopulatory phases of sexual selection. We therefore manipulated the larval diet of male and female Drosophila melanogaster to study how body size variation in both sexes biases competitive outcomes at different reproductive stages, from mating to paternity. We did not find a difference in mate preference or mating latency between females of different conditions, nor any interaction between male and female conditions. However, large males were more successful in gaining matings, but only when in direct competition, whereas mating latencies were shorter for low-condition males in noncompetitive settings. Small males also transferred more sperm to nonvirgin females, displaced a larger proportion of resident sperm, and achieved higher paternity shares per mating than large males. In agreement with existing theory, we suggest that small males might partially compensate for their low mating success by strategically investing in larger sperm numbers and potentially other, unmeasured ejaculate traits, when they do have a mating opportunity. |
| Databáze: | OpenAIRE |
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